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/*
* Copyright (c) 2010 The WebM project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include <stdio.h>
#include <assert.h>
#include "../vp8_mem.h"
#include "../common/onyxc_int.h"
#include "onyxd_int.h"
#include "../common/onyxd.h"
#include "../common/alloccommon.h"
#include "../common/yv12utils.h"
#include "../common/quant_common.h"
#include "detokenize.h"
static int get_free_fb(VP8_COMMON *cm)
{
int i;
for (i = 0; i < NUM_YV12_BUFFERS; i++)
if (cm->fb_idx_ref_cnt[i] == 0)
break;
assert(i < NUM_YV12_BUFFERS);
cm->fb_idx_ref_cnt[i] = 1;
return i;
}
static void ref_cnt_fb(int *buf, int *idx, int new_idx)
{
if (buf[*idx] > 0)
buf[*idx]--;
*idx = new_idx;
buf[new_idx]++;
}
/**
* If any buffer copy / swapping is signalled it should be done here.
*/
static int swap_frame_buffers(VP8_COMMON *cm)
{
int err = 0;
/* The alternate reference frame or golden frame can be updated
* using the new, last, or golden/alt ref frame. If it
* is updated using the newly decoded frame it is a refresh.
* An update using the last or golden/alt ref frame is a copy. */
if (cm->copy_buffer_to_arf)
{
int new_fb = 0;
if (cm->copy_buffer_to_arf == 1)
new_fb = cm->lst_fb_idx;
else if (cm->copy_buffer_to_arf == 2)
new_fb = cm->gld_fb_idx;
else
err = -1;
ref_cnt_fb(cm->fb_idx_ref_cnt, &cm->alt_fb_idx, new_fb);
}
if (cm->copy_buffer_to_gf)
{
int new_fb = 0;
if (cm->copy_buffer_to_gf == 1)
new_fb = cm->lst_fb_idx;
else if (cm->copy_buffer_to_gf == 2)
new_fb = cm->alt_fb_idx;
else
err = -1;
ref_cnt_fb(cm->fb_idx_ref_cnt, &cm->gld_fb_idx, new_fb);
}
if (cm->refresh_golden_frame)
ref_cnt_fb(cm->fb_idx_ref_cnt, &cm->gld_fb_idx, cm->new_fb_idx);
if (cm->refresh_alt_ref_frame)
ref_cnt_fb(cm->fb_idx_ref_cnt, &cm->alt_fb_idx, cm->new_fb_idx);
if (cm->refresh_last_frame)
{
ref_cnt_fb(cm->fb_idx_ref_cnt, &cm->lst_fb_idx, cm->new_fb_idx);
cm->frame_to_show = &cm->yv12_fb[cm->lst_fb_idx];
}
else
cm->frame_to_show = &cm->yv12_fb[cm->new_fb_idx];
cm->fb_idx_ref_cnt[cm->new_fb_idx]--;
return err;
}
/**
* Create a VP8 decoder instance.
*/
VP8D_PTR vp8_decoder_create()
{
VP8D_COMP *pbi = vpx_memalign(32, sizeof(VP8D_COMP));
if (!pbi)
return NULL;
memset(pbi, 0, sizeof(VP8D_COMP));
if (setjmp(pbi->common.error.jmp))
{
pbi->common.error.setjmp = 0;
vp8_decoder_remove(pbi);
return 0;
}
pbi->common.error.setjmp = 1;
vp8_initialize_common();
vp8_create_common(&pbi->common);
pbi->common.current_video_frame = 0;
pbi->common.show_frame = 0;
pbi->ready_for_new_data = 1;
vp8_initialize_dequantizer(&pbi->common);
// vp8_loop_filter_init(&pbi->common);
pbi->common.error.setjmp = 0;
return (VP8D_PTR)pbi;
}
/**
* Decode one VP8 frame.
*/
int vp8_decoder_start(VP8D_PTR ptr, struct pipe_vp8_picture_desc *frame_header,
const unsigned char *data, unsigned data_size,
int64_t timestamp_deadline)
{
VP8D_COMP *pbi = (VP8D_COMP *)ptr;
VP8_COMMON *cm = &pbi->common;
int retcode = 0;
pbi->common.error.error_code = VPX_CODEC_OK;
{
pbi->data = data;
pbi->data_size = data_size;
cm->new_fb_idx = get_free_fb(cm);
if (setjmp(pbi->common.error.jmp))
{
pbi->common.error.setjmp = 0;
/* We do not know if the missing frame(s) was supposed to update
* any of the reference buffers, but we act conservative and
* mark only the last buffer as corrupted. */
cm->yv12_fb[cm->lst_fb_idx].corrupted = 1;
if (cm->fb_idx_ref_cnt[cm->new_fb_idx] > 0)
cm->fb_idx_ref_cnt[cm->new_fb_idx]--;
return -1;
}
pbi->common.error.setjmp = 1;
}
retcode = vp8_frame_decode(pbi, frame_header);
if (retcode < 0)
{
pbi->common.error.error_code = VPX_CODEC_ERROR;
pbi->common.error.setjmp = 0;
if (cm->fb_idx_ref_cnt[cm->new_fb_idx] > 0)
cm->fb_idx_ref_cnt[cm->new_fb_idx]--;
return retcode;
}
{
if (swap_frame_buffers(cm))
{
pbi->common.error.error_code = VPX_CODEC_ERROR;
pbi->common.error.setjmp = 0;
return -1;
}
/*
if (cm->filter_level)
{
// Apply the loop filter if appropriate.
vp8_loop_filter_frame(cm, &pbi->mb);
}
*/
vp8_yv12_extend_frame_borders(cm->frame_to_show);
}
/* from libvpx : vp8_print_modes_and_motion_vectors(cm->mi, cm->mb_rows, cm->mb_cols, cm->current_video_frame); */
if (cm->show_frame)
cm->current_video_frame++;
pbi->ready_for_new_data = 0;
pbi->last_time_stamp = timestamp_deadline;
pbi->data_size = 0;
pbi->common.error.setjmp = 0;
return retcode;
}
/**
* Return a decoded VP8 frame in a YV12 framebuffer.
*/
int vp8_decoder_getframe(VP8D_PTR ptr,
YV12_BUFFER_CONFIG *sd,
int64_t *timestamp,
int64_t *timestamp_end)
{
int ret = -1;
VP8D_COMP *pbi = (VP8D_COMP *)ptr;
if (pbi->ready_for_new_data == 1)
return ret;
/* ie no raw frame to show!!! */
if (pbi->common.show_frame == 0)
return ret;
pbi->ready_for_new_data = 1;
*timestamp = pbi->last_time_stamp;
*timestamp_end = 0;
if (pbi->common.frame_to_show)
{
*sd = *pbi->common.frame_to_show;
sd->clrtype = pbi->common.clr_type;
sd->y_width = pbi->common.width;
sd->y_height = pbi->common.height;
sd->uv_height = pbi->common.height / 2;
ret = 0;
}
return ret;
}
/**
* Destroy a VP8 decoder instance.
*/
void vp8_decoder_remove(VP8D_PTR ptr)
{
VP8D_COMP *pbi = (VP8D_COMP *)ptr;
if (!pbi)
return;
vp8_remove_common(&pbi->common);
vpx_free(pbi->mbd);
vpx_free(pbi);
}
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